Magnesium L-Threonate
30 Servings Per Container: $1.24/Serving
A brain-targeted magnesium that supports cognitive function, sleep quality + calm.
- Crosses the blood-brain barrier boosting magnesium levels
- Helps support learning, attention, and cognitive function
- Promotes calm brain activity and improved sleep quality
Magnesium designed to reach the brain.
Formulated with Magtein®, a clinically studied form of magnesium L-threonate shown to increase magnesium levels in the brain. Designed to support cognitive function, relaxation, and deep, restorative sleep.
Magnesium L-Threonate is designed to support brain health, cognitive performance, and restorative sleep by increasing magnesium levels in the brain.
- Supports Deep, Restorative Sleep
Helps promote calm nervous system activity and healthy sleep quality without sedation. - Supports Memory and Learning
Magnesium plays an important role in synaptic plasticity, which supports memory formation and learning. - Supports Focus and Cognitive Performance
Helps support attention, mental clarity, and overall cognitive function. - Supports Nervous System Health
Magnesium helps regulate neurotransmitter activity and supports healthy brain signaling.
Magnesium L-Threonate is a specialized form of magnesium designed to effectively cross the blood-brain barrier and increase magnesium levels in the brain. Magnesium plays a critical role in regulating neuronal signaling, supporting synaptic plasticity, and maintaining healthy brain function.
This formula uses Magtein®, the patented and clinically studied form of Magnesium L-Threonate shown to elevate brain magnesium levels. Increased brain magnesium supports key neurological processes involved in memory formation, learning, relaxation, and healthy sleep regulation.
By supporting neurotransmitter balance and healthy synaptic activity, Magnesium L-Threonate helps promote calm brain function, cognitive performance, and restorative sleep.
Take 3 capsules daily, approximately 30–60 minutes before bed. Magnesium L-Threonate is best used as part of a consistent nightly routine to support relaxation and healthy sleep quality.
- Serving Size: 3 capsules
- Timing: 30–60 minutes before sleep
- Routine: Take consistently each evening for best results
Magnesium levels in the brain increase gradually with regular use. Consistent supplementation helps support cognitive function, relaxation, and restorative sleep over time.
Magnesium 145mg (from 2g Magtein® Magnesium L-threonate)
Other Ingredients: Rice Flour, Hypromellose (Capsule), Magnesium Stearate, and Silica
*Magtein® is a patented form of Magnesium L-Threonate shown to increase magnesium levels in the brain. Magnesium plays an important role in supporting cognitive function, neurotransmitter balance, and healthy nervous system activity, while also contributing to muscle function, protein synthesis, and energy production
Onset Time
Some individuals may notice improvements in sleep quality within about 7 days. For many, benefits continue to build with consistent use, with optimal effects typically experienced after about 4 weeks.
Expected Results
With regular supplementation, Magnesium L-Threonate may support deeper, more restorative sleep, along with improvements in focus, memory, and overall cognitive function. Individual results may vary.
There are 5 credible reviews and studies related to this product:
- Magnesium in disease prevention and overall health
- The relationship between micronutrient status and sleep patterns: a systematic review
- The effect of magnesium supplementation on primary insomnia in elderly: A double-blind placebo-controlled clinical trial
- Magnesium and Cognitive Health in Adults: A Systematic Review and Meta-Analysis
- Magnesium and the Athlete
- Promotes calm, focused mental clarity
- Helps reduce acute stress without brain fog
- Supports relaxation and sleep quality
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Frequently Asked Questions
Magnesium L-Threonate is a form of magnesium commonly used to support brain and nervous system function. It is often chosen to support relaxation, cognitive health, and overall nervous system balance as part of a daily routine.
Magnesium L-Threonate is formulated using Magtein®, a patented and clinically studied form of magnesium shown to increase magnesium levels in the brain. This form is known for its ability to cross the blood-brain barrier more effectively than many other magnesium compounds.
Yes. Magnesium L-Threonate is a magnesium supplement that can support healthy sleep patterns. Momentous Magnesium L-Threonate includes 2 grams of Magtein® per serving, which is a form of magnesium known for its ability to support the nervous system, which can help promote improved relaxation and sleep quality and duration.
Momentous Magnesium L-Threonate is designed to support calmness and recovery as part of a consistent nightly routine.
Magnesium L-Threonate can be used by individuals looking to support relaxation, cognitive function, and healthy sleep patterns.
It is commonly used by:
- People who experience occasional difficulty relaxing at night
- Individuals focused on improving sleep quality
- Those looking to support brain and nervous system health
Magnesium L-Threonate is typically taken daily as part of a consistent evening routine.
Magnesium L-Threonate is typically best taken in the evening, about 30 to 60 minutes before bed. Taking it at this time allows the supplement to support relaxation and prepare the body for sleep.
For best results, Momentous Magnesium L-Threonate should be taken consistently as part of a nightly routine.
The timeline for experiencing improvements in sleep quality from Magnesium L-Threonate can vary by individual. Some people may notice benefits within a few weeks of consistent use, while others may take longer. How soon you feel benefits also depends on personal factors, such as current nutrient status, diet, lifestyle, habits, environment, etc…
Like many supplements, Magnesium L-Threonate works best when taken regularly over time as part of a consistent sleep routine.
Yes. Magnesium L-Threonate can be taken daily when used as directed. Consistent nightly use is commonly recommended to support relaxation and healthy sleep patterns over time.
Magnesium L-Threonate is generally well tolerated for daily use when taken as directed. In some cases, higher doses of magnesium may cause mild digestive discomfort, such as diarrhea or stomach cramps.
It is recommended to follow the suggested serving size and adjust only as needed based on individual tolerance. Individuals with medical conditions or concerns should consult a healthcare professional before starting any new supplement.
Magnesium L-Threonate is often selected for its role in supporting brain and nervous system function. Other forms of magnesium are more commonly used to support muscle function or digestion, while magnesium L-threonate is frequently used to support relaxation, cognitive health, and sleep quality.
Every finished batch of Magnesium L-Threonate is certified through NSF Certified for Sport®, a respected independent program that verifies label accuracy and screens for hundreds of banned substances. If a batch fails to meet these independent standards, it does not ship. We also take transparency a step further by publishing third-party test results via Light Labs on individual product pages and making Certificates of Analysis (COAs) available for every batch.
We earn trust the hard way, by proving quality at every step, on every batch, with no shortcuts.